CN103885470A - High pressure automatic pressure relieving system - Google Patents
High pressure automatic pressure relieving system Download PDFInfo
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- CN103885470A CN103885470A CN201210555735.1A CN201210555735A CN103885470A CN 103885470 A CN103885470 A CN 103885470A CN 201210555735 A CN201210555735 A CN 201210555735A CN 103885470 A CN103885470 A CN 103885470A
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Abstract
The invention discloses a high pressure automatic pressure relieving system. The system comprises: a pressure transmitter; a pressure display instrument which is connected with a pressure vessel through the pressure transmitter; a feedback extraction circuit for receiving a feedback signal of the pressure display instrument; an on-off circuit which can be used to perform strong control on the output of the feedback extraction circuit; a drive circuit for receiving the signal of the feedback extraction circuit; and an electrically operated(pneumatic) valve, wherein the input of the valve is connected with the drive circuit, and the valve can be used to perform pressure relieving on the pressure vessel after being conducted. According to the invention, the on/off state of the valve is controlled through the pressure change in the pressure vessel, so once the pressure in the pressure vessel exceeds a set pressure, the automatic pressure relieving effect can be realized. Moreover, the system can be applied to other devices needing high pressure automatic pressure relieving. In addition, advantages, such as compact and small structure, low cost, safety, reliability, convenience, rapidity, etc., can be realized.
Description
Technical field
The present invention relates to laser equipment control system, specifically a kind of a kind of high pressure releasing pressure automatically system with FEEDBACK CONTROL.
Background technology
Full gas phase iodine laser (AGIL, all gas-phases iodine laser) is a kind of based on NCl(a)-I pass can novel iodine laser, its technology path is as follows:
F+DCl->DF+Cl
Cl+HN
3->HCl+N
3
Cl+N
3->NCl(a)+N
2
NCl(a)+I->NCl(X)+I*
I*+hv(1315nm)->I+2hv(1315nm)
From the nineties in last century till now, AGIL has experienced imagination, pulse bright dipping, the continuous stream gain test of discharge scheme, the continuous stream bright dipping of discharge scheme, the preliminary amplification and the conceptual phases such as driving trial of burning of continuous stream of discharge scheme, has obtained progress faster.The optimum working pressure of AGIL is 0.5KPA left and right, if far above this pressure, system works will be unstable.Meanwhile, the pressure bearing higher than optical cavity if there is pressure, just there will be dangerous situation.Therefore need to build a set of high pressure releasing pressure automatically system, once abnormal to reach cavity pressure, pressure relief valve is opened automatically, and optical cavity starts the object of pressure release.This device can widespread use and various chemical laser (for example " HF laser instrument " etc.) simultaneously.
Summary of the invention
In order to overcome above-mentioned deficiency, the object of the invention is to provide a kind of kind of a kind of high pressure releasing pressure automatically system with FEEDBACK CONTROL.Exceed set pressure once play pressure vessel, with regard to self-relieving effect.
For realizing object of the present invention, concrete technical scheme comprises:
A kind of high pressure releasing pressure automatically system, for pressure vessel,
Pressure display instrument table, pressure unit, negate circuit; On pressure vessel, be provided with electrically operated valve;
Pressure tap in pressure vessel is provided with pressure unit, and pressure unit is connected by signal shielding line with the connection terminal of pressure display instrument table; Pressure display instrument table is for the pressure demonstration of pressure vessel and providing of pressure feedback signal;
Negate circuit, negate circuit is connected with pressure display instrument table feedback output end, receives the feedback signal of pressure display instrument table, and feedback signal output signal is carried out to negate, output CMOS low and high level;
Solid-state relay switch, is connected with the output terminal of negate circuit, receives the output signal of negate circuit;
The output terminal of solid-state relay switch is connected with electrically operated valve;
When the pressure in pressure vessel higher than pressure display instrument table set pressure time, pressure display instrument table feedback output low level signal, negate through negate circuit changes high level signal into, export solid-state relay switch to by negate circuit, make solid-state relay switch obtain circuit turn-on, electrically operated valve is opened, and pressure vessel is carried out to pressure release;
When the pressure in pressure vessel lower than pressure display instrument table set pressure time, pressure display instrument table feedback output high level signal, negate through negate circuit changes low level signal into, export solid-state relay switch to by negate circuit, solid-state relay on-off circuit is disconnected, and electrically operated valve is closed automatically.
Described negate circuit adopts " reverse buffer " and " power MOSFET " circuit to realize, one input pin of reverse buffer (U1) is sampled to feedback signal, output signal is by the negate again of connecting of an output pin and (U1) 2 groups of other above input pins in parallel, and output signal is connected to the G level of MOSFET circuit; The D level of MOSFET circuit is exported as negate.
Connecting circuit between solid-state relay switch and negate circuit is provided with a switch,
Switch one end is received the D level of MOSFET circuit, and the switch other end is received the positive input terminal of solid-state relay switch low voltage control end; It act as: before system operation, the input of solid-state relay switch (5) is forced to control, guarantee not conducting of driving switch, and system is equivalent to wire while moving.
Electrically operated valve supply voltage is 220VAC, and it is connected with the 220VAC of the control through solid-state relay switch.
Described electrically operated valve can be solenoid valve, or electromagnetism-gas-driving valve.
Make electronic circuit board, decision circuitry and driving circuit are welded thereon.Then wiring board, power supply and pressure display instrument table rational deployment thereof, in the box of 800 × 600 × 400mm, are made into instrument.With connection terminal Bonding pressure transmitter and test instrumentation.Its principle assumption diagram as shown in Figure 1.
The invention has the beneficial effects as follows:
1, the present invention can realize fast pressure relief valve by pressure display instrument table FEEDBACK CONTROL and opens, and abnormal conditions that can fast processing cavity pressure ensure the safety of optical cavity system.
2, the present invention is for full gas chemistry laser instrument and HF laser instrument thereof, realization igniting that not only can be safe and reliable, can also be in test effective saving gas.This technological invention compact conformation is small and exquisite, and expense is cheap, and the power saving that saves time is convenient and swift.
Brief description of the drawings
Fig. 1 is system architecture diagram of the present invention.
Fig. 2 is the circuit theory diagrams of negate circuit in Fig. 1.
Embodiment
Embodiment 1
As shown in Figure 1, structure of the present invention comprises:
Pressure display instrument table, pressure unit, negate circuit; On pressure vessel, be provided with electrically operated valve;
Pressure tap in pressure vessel is provided with pressure unit, and pressure unit is connected by signal shielding line with the connection terminal of pressure display instrument table; Pressure display instrument table is for the pressure demonstration of pressure vessel and providing of pressure feedback signal;
Negate circuit, negate circuit is connected with pressure display instrument table feedback output end, receives the feedback signal of pressure display instrument table, and feedback signal output signal is carried out to negate, output CMOS low and high level;
Solid-state relay switch, is connected with the output terminal of negate circuit, connects the output signal of negate circuit.
The output terminal of solid-state relay switch is connected with electrically operated valve, and in the time that solid-state relay switch obtains circuit turn-on, electrically operated valve is opened, and pressure vessel is carried out to pressure release.
When the pressure in pressure vessel lower than pressure display instrument table set pressure time, electrically operated valve is closed automatically.
Electrically operated valve 6 supply voltages are 220VAC, and it is connected with the 220VAC of the control through solid-state relay switch.
There is the pressure display instrument table of feedback output, the Japanese conduction SR93 of company pressure display instrument table;
As shown in Figure 2, described negate circuit adopts " reverse buffer " and " power MOSFET " circuit to realize, one input pin of reverse buffer (U1) is sampled to feedback signal, output signal is by the negate again of connecting of an output pin and (U1) several groups of other input pins in parallel, and output signal is connected to the G level of MOSFET circuit; The D level of MOSFET circuit is exported as negate.
One switch, the D level of one end ground connection MOSFET circuit, it act as:
Before system operation, the input of solid-state relay switch is forced to control, guarantee not conducting of driving switch, and system is equivalent to wire while moving.
The course of work of system is as follows:
1 switches on power.
1 presses switch.
2 by pressure display instrument table capping pressure release pressure.
3 in the time that system pressure is less than set pressure system without any reaction.
4 when system pressure is higher than set pressure time, and pressure relief valve is opened automatically.Guiding pressure is lower than setting, valve closing.
Claims (5)
1. a high pressure releasing pressure automatically system, for pressure vessel, is characterized in that comprising:
Pressure display instrument table (2), pressure unit (1), negate circuit; On pressure vessel, be provided with electrically operated valve (6);
Be provided with pressure unit (1) in the pressure tap of pressure vessel, pressure unit (1) is connected by signal shielding line with the connection terminal of pressure display instrument table (2); Pressure display instrument table (2) is for the pressure demonstration of pressure vessel and providing of pressure feedback signal;
Negate circuit (3), negate circuit (3) is connected with pressure display instrument table (2) feedback output end, receive the feedback signal of pressure display instrument table (2), feedback signal output signal is carried out to negate, output CMOS low and high level;
Solid-state relay switch (5), is connected with the output terminal of negate circuit (3), receives the output signal of negate circuit (3);
The output terminal of solid-state relay switch (5) is connected with electrically operated valve (6);
When the pressure in pressure vessel (7) higher than pressure display instrument table (2) set pressure time, pressure display instrument table (2) feedback output low level signal, negate through negate circuit (3) changes high level signal into, export solid-state relay switch (5) to by negate circuit (3), make solid-state relay switch (5) obtain circuit turn-on, electrically operated valve (6) is opened, and pressure vessel (7) is carried out to pressure release;
When the pressure in pressure vessel (7) lower than pressure display instrument table (2) set pressure time, pressure display instrument table (2) feedback output high level signal, negate through negate circuit (3) changes low level signal into, export solid-state relay switch (5) to by negate circuit (3), solid-state relay switch (5) circuit is disconnected, and electrically operated valve (6) is closed automatically.
2. high pressure releasing pressure automatically system according to claim 1, it is characterized in that: described negate circuit adopts " reverse buffer " and " power MOSFET " circuit to realize, one input pin of reverse buffer (U1) is sampled to feedback signal, output signal is by the negate again of connecting of an output pin and (U1) 2 groups of other above input pins in parallel, and output signal is connected to the G level of MOSFET circuit; The D level of MOSFET circuit is exported as negate.
3. high pressure releasing pressure automatically system according to claim 2, is characterized in that:
Connecting circuit between solid-state relay switch (5) and negate circuit (3) is provided with a switch (4), switch (4) one ends are received the D level of MOSFET circuit, and switch (4) other end is received the positive input terminal of solid-state relay switch (5) low voltage control end; It act as: before system operation, the input of solid-state relay switch (5) is forced to control, guarantee not conducting of driving switch, and system is equivalent to wire while moving.
4. high pressure releasing pressure automatically system according to claim 1, is characterized in that:
Electrically operated valve (6) supply voltage is 220VAC, and it is connected with the 220VAC of the control through solid-state relay switch (5).
5. according to the high pressure releasing pressure automatically system described in claim 1 or 4, it is characterized in that:
Described electrically operated valve can be solenoid valve, or electromagnetism-gas-driving valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210555735.1A CN103885470B (en) | 2012-12-19 | 2012-12-19 | A kind of high pressure releasing pressure automatically system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210555735.1A CN103885470B (en) | 2012-12-19 | 2012-12-19 | A kind of high pressure releasing pressure automatically system |
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| CN103885470A true CN103885470A (en) | 2014-06-25 |
| CN103885470B CN103885470B (en) | 2017-05-31 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105716347A (en) * | 2014-12-03 | 2016-06-29 | 中国航空工业集团公司航空动力控制系统研究所 | Liquid nitrogen low-temperature box |
| CN107648781A (en) * | 2017-10-23 | 2018-02-02 | 成都众山科技有限公司 | Pneumatic fire-extinguishing device with pressure alarm function |
| CN107802975A (en) * | 2017-10-23 | 2018-03-16 | 成都众山科技有限公司 | Fire extinguishing gas tank with superpressure processing function |
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| CN1080720A (en) * | 1992-06-23 | 1994-01-12 | 核工业理化工程研究院 | Laser cooling water pressure shows and warning system automatically |
| JPH1065838A (en) * | 1996-08-15 | 1998-03-06 | Nec Corp | Subscriber circuit |
| CN2601351Y (en) * | 2003-01-13 | 2004-01-28 | 陈国庆 | Power failure emergency lamp with fuel gas warning device |
| DE102004052581A1 (en) * | 2004-10-29 | 2006-05-04 | Advanced Micro Devices, Inc., Sunnyvale | CMOS gate structure having a pre-doped semiconductor gate material with improved uniformity of dopant distribution and methods of fabricating the structure |
| CN201037978Y (en) * | 2007-06-02 | 2008-03-19 | 山西乡镇企业焦炭供销有限责任公司 | Alarming top light on taxi roof |
| CN201156726Y (en) * | 2008-02-03 | 2008-11-26 | 深圳艾科创新微电子有限公司 | CMOS delay comparator with threshold adjustable |
| CN101425802A (en) * | 2008-11-17 | 2009-05-06 | 北大方正集团有限公司 | Signal conversion apparatus and method |
-
2012
- 2012-12-19 CN CN201210555735.1A patent/CN103885470B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1080720A (en) * | 1992-06-23 | 1994-01-12 | 核工业理化工程研究院 | Laser cooling water pressure shows and warning system automatically |
| JPH1065838A (en) * | 1996-08-15 | 1998-03-06 | Nec Corp | Subscriber circuit |
| CN2601351Y (en) * | 2003-01-13 | 2004-01-28 | 陈国庆 | Power failure emergency lamp with fuel gas warning device |
| DE102004052581A1 (en) * | 2004-10-29 | 2006-05-04 | Advanced Micro Devices, Inc., Sunnyvale | CMOS gate structure having a pre-doped semiconductor gate material with improved uniformity of dopant distribution and methods of fabricating the structure |
| CN201037978Y (en) * | 2007-06-02 | 2008-03-19 | 山西乡镇企业焦炭供销有限责任公司 | Alarming top light on taxi roof |
| CN201156726Y (en) * | 2008-02-03 | 2008-11-26 | 深圳艾科创新微电子有限公司 | CMOS delay comparator with threshold adjustable |
| CN101425802A (en) * | 2008-11-17 | 2009-05-06 | 北大方正集团有限公司 | Signal conversion apparatus and method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105716347A (en) * | 2014-12-03 | 2016-06-29 | 中国航空工业集团公司航空动力控制系统研究所 | Liquid nitrogen low-temperature box |
| CN107648781A (en) * | 2017-10-23 | 2018-02-02 | 成都众山科技有限公司 | Pneumatic fire-extinguishing device with pressure alarm function |
| CN107802975A (en) * | 2017-10-23 | 2018-03-16 | 成都众山科技有限公司 | Fire extinguishing gas tank with superpressure processing function |
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| Publication number | Publication date |
|---|---|
| CN103885470B (en) | 2017-05-31 |
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